HC

Harlan B. Christenson

BE Berkley: 1 patents #3 of 4Top 75%
📍 Spirit Lake, IA: #4 of 7 inventorsTop 60%
🗺 Iowa: #89 of 549 inventorsTop 20%
Overall (1989): #108,920 of 140,708Top 80%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4860481 Solid graphite rod tip — 1989-08-29